Mahindra 3640 PST OS Tractor Price, Specs, Review: Mahindra 3640 PST OS Tractor fitted with 4 cylinders, Four-stroke, Naturally Aspirated, Direct Injection, 2732cc, Water Cooled Diesel Engine, which delivers 40hp at rated rpm 2800. Mahindra 3640 PST OS tractor is sure to meet your demands. It is available from 40 to 49 horsepower, this professional-grade tractor also provides … [Read more...] about Mahindra 3640 PST OS Tractor Price, Specs, Key Features